The Grammy Award-winning San Diego singer-songwriter's only confirmed California concert this summer (make that, this year) thus far is an Aug. 7 benefit show at Shoreline Amphitheatre in Mountain View, near San Jose. It is one of only three U.S. performance dates he has scheduled for this year.

Ticket go on sale Monday at 10 a.m. for the concert, which is being staged to raise funds for earthquake relief efforts in Japan, as well as to support non-nuclear energy organizations worldwide.

Mraz will be part of a lineup that includes Crosby, Stills & Nash, Bonnie Raitt, Jackson Browne, Sweet Honey In The Rock, Rage Against The Machine's Tom Morello, the Doobie Brothers, Japanese New Age music pioneer Kitaro, John Hall, Johnathan Wilson and other artists.

Given that Neil Young lives nearby and uses Shoreline as the venue for his annual Bridge benefit concerts, it doesn't seem far-fetched to speculate that Young could just pop up for the Aug. 7 show. And given Mraz's budding friendship with Graham Nash, who Mraz visited at Nash's home in Hawaii a few years back, well, the musical possibilities are intriguing.

The musicians at the Aug. 7 benefit gig are banding together to perform on behalf of MUSE (Musicians United for Safe Energy), the non-profit organization launched in 1979 by Raitt, Browne and John Hall to promote non-nuclear energy sources. Proceeds from the August concert will help aid Japan’s earthquake relief efforts as well as to promote safe, alternative energy on a global scale.

MUSE, veteran rock fans may recall, first took off when it held a series of concerts in 1979 at New York's Madison Square Garden. In addition to CSN, Raittt, Browne, Hall, Sweet Honey In The Rock and the Doobie Brothers, those 1979 benefit shows included performances by Bruce Springsteen and the E Street Band, Tom Petty & The Heartbreakers, James Taylor, Carly Simon, Ry Cooder, Chaka Khan, Jesse Colin Young, Poco, Nicolette Larson, Raydio and recently deceased rap pioneer Gil Scott-Heron.

The result was a live double album and concert film. (To see Springsteen and the E Street Band's 11-minute-plus performance of "Thunder Road" and from the "No Nukes" film, click here -- and be sure to savor the rousing tenor sax work by E Street Band mainstay Clarence Clemons, who died Saturday, June 18. from complications from a stroke.)

Tickets for the Aug. 7 concert will be available, starting Monday, June 27, at the Live Nation web site. They are priced at $19.50 to $99.50 each. (With service charges that comes out to $24.50 for the $19.50 unreserved lawn tickets and $116.30 for reserved seats near the stage.) Details will be released soon regarding special gold and silver circle ticket packages.